There were 29 cannabis plants, with a possible potential street value of £15,000, with a potential follow-up yield of £35,000.

He was searched and heroin, valued at £510, and crack cocaine, worth £1,200, were found.

Telephone evidence showed a dealer list.

Wilson had convictions for 54 previous offences, including burglary, perverting the course of justice, driving while banned and possessing cannabis.

What cannabis can do to you

The long term effects of cannabis are causing increasing concern as its use continues to be common among young people.

The drug advisory service FRANK says regular cannabis use affects brain function, increasing the risk of psychotic illnesses including schizophrenia. Those with a history of mental illness in their families are more at risk.

Even occasional use has risks. FRANK says: “Cannabis can mess with your mind and with your mood. It can disturb your sleep and can make you depressed. Some will become anxious, panicky, and even aggressive.

“You might see or hear things which are not there (known as hallucinations) which may be frightening. For some people, cannabis causes hours or even days of anxiety, paranoia, delusions and hallucinations that usually only settles down after the cannabis is stopped.”

There is also evidence cannabis can makes it difficult to learn and concentrate and research has linked cannabis use to poor exam results.

It is also argued that cannabis is often a "gateway" drug, with users more likely to try "harder" drugs such as ecstasy, cocaine and heroin.

Andrew Bailey, mitigating, said Wilson was ashamed of what he had done.

"He is going to be taken away from his children and he hates himself for that," said Mr Bailey.

He was "dreading" prison because, on a previous jailing, he had his front teeth knocked out.

He had been addicted to cannabis since the age of 11 and would have used much of the harvested cannabis for himself.

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